Effect of betaine supplementation on plasma nitrate/nitrite in exercise-trained men

Table 3 Dietary data for subjects in Study 2 during the day prior to each test day

Variable	Pre Placebo	Post Placebo	Pre Betaine	Post Betaine
Kilocalories	1931 ± 183	2147 ± 265	2242 ± 288	2551 ± 325
Protein (g)	115 ± 16	122 ± 16	125 ± 24	138 ± 22
Carbohydrate (g)	249 ± 24	267 ± 41	280 ± 41	320 ± 52
Fat (g)	58 ± 8	69 ± 12	73 ± 12	83 ± 11
Vitamin C (mg)	58 ± 18	76 ± 26	102 ± 34	80 ± 16
Vitamin E (mg)	5 ± 2	4 ± 1	3 ± 1	4 ± 2

Data are mean ± SEM.
No statistically significant condition × pre/post intervention interaction, pre/post intervention, or condition main effects noted for kilocalories (p = 0.69; p = 0.46; p = 0.13), protein (p = 0.94; p = 0.61; p = 0.57), carbohydrate (p = 0.56; p = 0.67; p = 0.17), fat (p = 0.90; p = 0.41; p = 0.14), vitamin C (p = 0.43; p = 0.92; p = 0.33), or vitamin E (p = 0.41; p = 0.86; p = 0.82), respectively.
Study involved a cross-over design with subjects consuming 2.5 grams of betaine or a placebo daily for 14 days; 21 day washout period between each condition.

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